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1. In evaluating J(x -5)?dx. What is u ? A. (x - 5 )20 B. x- 5 C. (x-5 )20 + C D. (x-5)21 + C 21 20 2. In evaluating S(x -5)20dx. What is du ? A. du = dx B. du = x C. du = dx + C D. du = (x -5)20 3. Using the integration by substitution, evaluate J( x - 5 )?dx. A. +C B (x-5)71 + C C. (x-5)20 + C 21 D. B. (x-5)21 + C 21 20 4. In evaluating (3x2 - 4x + 2 )* (3x - 2) dx, if u = 3x? - 4x + 2 , what is du? A. 6x - 4 B. 6x dx C. (6x - 4 )dx D. -4x dx